MELBOURNE, AUSTRALIA - FEBRUARY 07: Kosta Barbarouses of the Victory celebrates with Gui Finkler after scoring a goal during the round 16 A-League match between Melbourne Victory and Melbourne City FC at Etihad Stadium on February 7, 2015 in Melbourne, Australia. (Photo by Scott Barbour/Getty Images)

With the off-season in full swing and each A-League club looking to bolster their current roster, here are all the deals that have taken place so far this transfer window.

Adelaide United

IN: Ryan Kitto (Newcastle Jets), Marc Marino (Melbourne City), Ben Garuccio (Melbourne City), Jesse Makarounas (Melbourne Victory)

OUT: Bruce Djite (Suwon FC), Bruce Kamau (Melbourne City), Craig Goodwin (Sparta Rotterdam), Ruon Tongyi (Melbourne City), Pablo Sanchez (released) Eli Babalj (loan expired)

Last season's champions are yet to bring in any big signings, but unfortunately the Reds have had some huge departures. Bruce Djite and Pablo Sanchez were instrumental in the Reds' title winning season, but both have left the club, with Djite recently signing for Suwon FC.

Brisbane Roar

IN: Jacob Pepper (Western Sydney Wanderers), Kye Rowles (Free Agent), Connor O'Toole (Free Agent)

OUT: Devante Clut (Newcastle Jets), Steven Lustica (Western Sydney Wanderers), Henrique (Negeri Sembilan), Jean Carlos Solorzano (released), Javier Hervas (released), James Donachie (Melbourne Victory), Shane Stefanutto (retired)

The semi-finalists of 2015-16 have been relatively quiet in the transfer window so far, with the signature of Jacob Pepper from Brisbane Roar the only A-League experienced player the club has brought in. Like Adelaide, most of their big name deals have been made in the departures column, with Henrique, Steven Lustica and Shane Stefanutto leaving the Roar.

Central Coast Mariners

IN: Jacques Faty (Sydney FC), Mickael Tavares (Sydney FC), Ivan Necevski (Sydney FC), Kwabena Appiah (Wellington Phoenix), Connor Pain (Melbourne Victory), Blake Powell (Wellington Phoenix), Adam Berry (promoted), Jake Adelson (promoted)

OUT: Mitch Austin (Melbourne Victory), Anthony Kalik (HNK Hajduk Split), Daniel Heffernan (released), Francesco Stella (released),Tomislav Uskok (released), Glen Trifiro (released), Luis Garcia (contract expired)

After finishing with the wooden spoon last season, the Mariners have attacked the transfer window, signing multiple proven A-League players. Jacques Faty, Mickael Tavares and Ivan Necevski have all been brought over from Sydney FC, as the Mariners have released some un-required squad players.

Melbourne City

IN: Manny Muscat (Wellington Phoenix), Bruce Kamau (Adelaide United), Daniel Arzani (FFA Centre of Excellence), Ruon Tongyi (Adelaide United), Fernando Brandan (Atletico Temperley), Neil Kilkenny (Preston North End)

OUT: Aaron Mooy (Manchester City), Harry Novillo (Manisaspor) Alex Wilkinson (Sydney FC), Marc Marino (Adelaide United), Michael Zullo (Sydney FC), Ben Garuccio (Adelaide United), Aaron Hughes (released), James Brown (released), Jason Trifiro (released), Wade Dekker (released), Patrick Kisnorbo (retired)

Melbourne City have been involved in arguably the biggest deal of the window, with Aaron Mooy signing for Manchester City. Michael Zullo and Harry Novillo are also big losses for City, although the signings of Neil Kilkenny and Fernando Brandan are sure to give City a boost this season.

Melbourne Victory

IN: Mitch Austin (Central Coast Mariners), Alan Baro (Ponferradina), James Donachie (Brisbane Roar), Stefan Nigro (promoted)

OUT: Kosta Barbarouses (Wellington Phoenix), Gui Finkler (Wellington Phoenix), Jesse Makarounas (Adelaide United), Danny Vukovic (Sydney FC), Archie Thompson (released), Dylan Murnane (released), Giancarlo Gallifuoco (released) Matthieu Delpierre (retired)

City's crosstown rivals have been much more quieter during the transfer window. The Melbourne Victory have signed Mitch Austin from the Mariners and Alan Baro from overseas, but have lost key contributors to last season's squad in Gui Finkler, Kosta Barbarouses and Matthieu Delpierre.

Newcastle Jets

IN: Devante Clut (Brisbane Roar), Wayne Brown (SJK), Daniel Alessi (Western Sydney Wanderers), Andrew Hoole (Sydney FC), Andrew Nabbout (Negeri Sembilan), Jack Duncan (Randers FC), Ivan Vujica (Dinamo Zagreb)

OUT: Ryan Kitto (Adelaide United), Milos Trifunovic (released), Leonardo (released), Enver Alivodic (released), Brandon Lundy (released), Josh Barresi (released), Cameron Watson (released)

Newcatle have released a number of squad players to make room for bigger signings, with the Jets recruiting former Fulham player Wayne Brown. Devante Clut, Andrew Hoole and Andrew Nabbout all have A-League experience, as Newcastle look to build on their 8th place finish from last season.

Perth Glory

IN: Rhys Williams (Middlesbrough), Chris Herd (Chesterfield), Rostyn Griffiths (Roda FC) Joseph Mills (Oldham Athletic), Nick Feely (promoted)

OUT: Jerrad Tyson (Western Sydney Wanderers), Ruben Zadkovich (retired), Gyorgy Sandor (released), Krisztian Vadocz (released), Diogo Ferreira (released), Hagi Gligor (released)

The Glory have made three big signings already this off-season, with Rostyn Griffths joining Australian internationals Rhys Williams and Chris Herd all returning to their home state to play for Perth. Jerrad Tyson and Ruben Zadkovich have left the club as well as a few squad players.

Sydney FC

IN: Alex Wilkinson (Melbourne City), Michael Zullo (Melbourne City), Joshua Brillante (Fiorentina), Danny Vukovic (Melbourne Victory), Bernie Ibini (Club Brugge)

OUT: Jacques Faty (Central Coast Mariners), Mickael Tavares (Central Coast Mariners), Ivan Necevski (Central Coast Mariners), Shane Smeltz (Kedah FC), Ali Abbas (released)

Sydney finished 7th last season, but will be looking to crack the top six given the class of their recent signings. Bernie Ibini returns to the Sky Blues after a year in Belgium, and is joined in Sydney by Socceroos midfielder Joshua Brillante.

Wellington Phoenix

IN: Kosta Barbarouses (Melbourne Victory), Gui Finkler (Melbourne Victory)

OUT: Manny Muscat (Melbourne City), Kwabena Appiah (Central Coast Mariners), Blake Powell (Central Coast Mariners), Albert Riera (retired), Ben Sigmund (retired)

Wellington have raided the Melbourne Victory for their only two signings of the window so far, as Kosta Barbarouses and Gui Finkler have joined the Phoenix. Key defenders Manny Muscat and Ben Sigmund have left the Phoenix, and there's no doubt that will be an area of the pitch the Kiwi club will focus on strengthening before the season begins.

Western Sydney Wanderers

IN: Steven Lustica (Brisbane Roar), Jerrad Tyson (Perth Glory), Artiz Borda (Deportivo Alaves), Bruno Pinatares (Cerro), Lachlan Scott (promoted), Mario Shabow (promoted)

OUT: Mark Bridge (Chiangrai United), Daniel Alessi (Newcastle Jets), Jacob Pepper (Brisbane Roar), Romeo Castelen (released), Andreu (released), Alberto Aguilar (released), Federico Piovaccari (released), Golgol Mebrahtu (released), Matt Sim (released), Liam Reddy (released), Alusine Fofanah (released), Shayne D'Cunha (released)

Last season's runners-up have released a host of squad players to make room for some new signings, headlined by some overseas talent. Artiz Borda and Bruno Pinatares both had successful stints at their previous clubs, and will be looking to bring their South American flair to Australia.